#import .bos

I use community version of Bonita studio and i want to import .bos exported from last studio to another community 7.8.0 studio but this happened :"Designed with a subscription edition. incompatible with community edition"
I think this problem when issued same version studio as source and destination for ex. source 7.8.0 and destination is same 7.8.0.
when use lower version .bos ex. 7.7.4 to 7.8.0 studio everything is good!!